AIEEE 2008 Physics

1)    A body of mass m = 3.513 kg is moving along the x-axis with a speed of 5.00 ms^-1. The magnitude of its momentum is recorded as

1 )   17.565 kg ms^-1

2 )   17.56 kg ms^-1

3 )   17.57 kg ms^-1

4 )   17.6 kg ms^-1

2)    Consider a uniform square plate of side 'a' and mass 'm'. The moment of inertia of this plate about an axis perpendicular to its plane and passing through one of its corners is

1)  1/12 m a²

2)   7/12 m a²

3)  2/3 m a²

4)  5/6 m a²

3)    The speed of sound in oxygen (O₂) at a certain temperature is 460 ms^-1. The speed of sound in helium (He) at the same temperature will be (assume both gases to be ideal)

1 )   500 ms^-1

2 )   650 ms^-1

3 )   330 ms^-1

4 )   460 ms^-1

4) This question contains Statement-I and Statement2. Of the four choices given after the statements, choose the one that best describes the two statements.

Statement-1:
Energy is released when heavy nuclei undergo fission or light nuclei undergo fusion. and

Statement-2:
For heavy nuclei, binding energy per nucleon increases with increasing Z while for light nuclei it decreases with increasing Z.

1 ) Statement-1 is true, Statement-2 is true; Statement-2 is not a correct explanation for Statement-1

2 ) Statement-1 is true, Statement-2 is false

3 ) Statement-1 is false, Statement-2 is true

4 ) Statement-1 is true, Statement-2 is true; Statement-2 is a correct explanation for Statement-1

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